WASHINGTON, April 23 -- The Library of Congress issued the following news: * * * Mac Barnett Embarks on Tour as National Ambassador for Young People's Literature Barnett to Champion Children's Picture Books with 'Behold, The Picture Book! Let's Celebrate Stories We Can Feel, Hear, and See' Initiative The Library of Congress, in partnership with Every Child a Reader, announces the launch of National Ambassador for Young People's Literature Mac Barnett's national tour with a visit to Coronado,  more